[5] After continuing to play for Fortuna Düsseldorf II Piette made his senior debut as a second-half substitute for Erwin Hoffer on 4 April 2014 in a 2–1 victory over SC Paderborn.

[6] On 25 August 2014, Piette signed a one-year deal with Deportivo de La Coruña, being assigned to the reserves in Tercera División.

[11] On 3 August 2017, Piette returned to Canada to sign with Montreal Impact, later renamed CF Montréal, of Major League Soccer, citing a desire to play in his hometown.

[12][13] He made his debut for the club on 12 August in a 3–0 win over Philadelphia Union, earning rave reviews, as well as a place in the MLS team of the week.

[21] He made his senior international debut on 3 June 2012, coming on as an 85th-minute substitute for Julian De Guzman in a 0–0 draw with the United States at BMO Field.